Photosensitive resin composition, light blocking layer using the same, and color filter

A photosensitive resin composition, comprising:

• (A) a copolymer resin represented by the following Chemical Formula 1;
• (B) a colorant including a pigment dispersion solution;
• (C) a photopolymerizable compound;
• (D) a photopolymerization initiator;
• and
• (E) a solvent:
• wherein, in the above Chemical Formula 1,
• R1 and R2 are the same or different and are each independently hydrogen or substituted or unsubstituted C1 to C20 alkyl,
• Y1 and Y2 are the same or different and are each independently represented by the following Chemical Formula 2-1,
• Z1 is represented by the following Chemical Formula 2-2,
• x is an integer ranging from 1 to 200, y is an integer ranging from 1 to 200, x+y≧2,
• wherein, in the above Chemical Formula 2-1,
• R3 to R6 are the same or different and are each independently hydrogen, halogen, a hydroxy group, a cyano group, substituted or unsubstituted C1 to C20 alkyl, a carboxyl group, a nitro group, a sulfonyl group, or a combination thereof,
• R7 is hydrogen or substituted or unsubstituted C1 to C20 alkyl,
• L1 is substituted or unsubstituted C1 to C20 alkylene, and
• n1 is an integer ranging from 1 to 12,
• wherein, in the above Chemical Formula 2-2,
• W is substituted or unsubstituted C1 to C20 alkylene, substituted or unsubstituted C2 to C20 alkenylene, substituted or unsubstituted C1 to C20 heteroalkylene, substituted or unsubstituted C3 to C20 cycloalkylene, substituted or unsubstituted C4 to C20 cycloalkenylene, substituted or unsubstituted C2 to C20 hetero cycloalkylene, substituted or unsubstituted C2 to C20 hetero cycloalkenylene, or substituted or unsubstituted C6 to C20 arylene.